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Temper

BennetLeff·temper·pcb/temper.kicad_pcb

Temper PCB layout, top view — open source ESP32 board by BennetLeff
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About the Temper PCB

Temper is an open source ESP32 PCB design by BennetLeff, published on GitHub under the Custom license license. It is a 6-layer board measuring 164 × 234 mm, with 164 components from 42 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. By type, the board carries 75 resistors, 41 capacitors, 27 ICs, 4 diodes, 3 relays and 2 transistors.

From the project

a breville control freak ++

Temper is a consumer induction cooker built around three pillars: an ESP32-S3 firmware with an 8-state transition-table machine handling real-time power control and hardware-latched protection circuits; a KiCad PCB design optimized through a custom CP-SAT-based signal-integrity and thermal-aware placer pipeline; and a Python/Rust placer toolchain (CP-SAT solver, geometry/DRC/DSN/IPC crates, workflow DAG) that automates layout and checks placement against IPC standards. Protection — over-current, over-voltage, thermal shutdown, UVLO — is designed to be hardware-latched with firmware monitoring.

Temper, from the project README
From the project README

Temper bill of materials (BOM)

164 components, 42 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
?
U1, U2
3
?
U3, U13, U21
2
?
U4, U5
1
?
U6
1
?
U7
1
?
U8
12
?
U9, U10, U11, U12, U14, U15, U16, U17 +4
4
?
U23, U24, U25, U26
1
?
U27
2
IKW40N120H3
?
Infineon
Q1, Q2
1
?
J1
1
?
J2
1
?
F1
1
?
K1
2
?
K2, K3
1
?
PS1
1
?
RT1
1
?
RV1
2
?
SW1, SW2
2
?
T1, T2
Show 22 more
QtyPartRefs
3
?
D1, D2, D3
1
?
D4
1
?
L1
1
?
L2
1
?
C1
4
?
C2, C3, C4, C5
1
?
C6
3
?
C7, C8, C24
5
?
C9, C11, C12, C15, C17
22
?
C10, C13, C16, C18, C19, C20, C21, C22 +14
1
?
C14
3
?
C25, C26, C27
1
?
C40
3
?
R1, R60, R75
6
?
R2, R3, R12, R13, R28, R40
4
?
R4, R5, R14, R15
4
?
R6, R7, R8, R9
12
?
R10, R11, R18, R22, R25, R46, R47, R48 +4
43
?
R16, R17, R19, R20, R21, R23, R24, R26 +35
1
?
R30
1
?
R34
1
?
R55

Temper design files

The KiCad project lives in the BennetLeff/temper repository on GitHub; these links point at the commit this page was built from.

Temper: common questions

What microcontroller does the Temper use?

The Temper is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Temper PCB?

The Temper measures 164 × 234 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Temper?

164 components, from 42 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Temper design files?

From the BennetLeff/temper repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Temper design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Temper without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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